Remove internal fetch retry support

src/config.ts

@@ -7,8 +7,6 @@ export const defaultEndpoint =
 export const currentConfig: Config = {
   japaneseAddressesApi: defaultEndpoint,
   cacheSize: 1_000,
-  backendTimeout: 1_500,
-  backendTries: 3,
 }
 
 export type FetchOptions = {
@@ -27,44 +25,6 @@ export type FetchLike = (
   options?: FetchOptions,
 ) => Promise<FetchResponseLike>
 
-const timeoutableFetch = async (
-  fetch: (input: RequestInfo, init?: RequestInit) => Promise<Response>,
-  input: RequestInfo,
-  init: RequestInit | undefined,
-  timeout: number,
-) => {
-  const response = await fetch(input, {
-    ...init,
-    signal: AbortSignal.timeout(timeout),
-  })
-  return response
-}
-
-export async function fetchWithTimeoutRetry(
-  fetch: (input: RequestInfo, init?: RequestInit) => Promise<Response>,
-  input: RequestInfo,
-  init?: RequestInit,
-) {
-  let tries = 0
-  while (true) {
-    try {
-      // await needs to be in this try block, otherwise it won't be caught
-      const resp = await timeoutableFetch(
-        fetch,
-        input,
-        init,
-        currentConfig.backendTimeout,
-      )
-      return resp
-    } catch (error) {
-      tries++
-      if (tries >= currentConfig.backendTries) {
-        throw error
-      }
-    }
-  }
-}
-
 /**
  * @internal
  */
@@ -90,7 +50,7 @@ export const __internals: { fetch: FetchLike } = {
     } else {
       throw new Error('fetch is not available in this environment')
     }
-    return fetchWithTimeoutRetry(globalFetch, url, {
+    return globalFetch(url, {
       headers,
     })
   },

src/main-node.ts

@@ -1,7 +1,6 @@
 import * as Normalize from './normalize'
 import {
   __internals,
-  fetchWithTimeoutRetry,
   FetchOptions,
   FetchResponseLike,
 } from './config'
@@ -48,9 +47,7 @@ export const requestHandlers = {
     if (typeof o.length !== 'undefined' && typeof o.offset !== 'undefined') {
       headers['Range'] = `bytes=${o.offset}-${o.offset + o.length - 1}`
     }
-    return fetchWithTimeoutRetry(
-      // 私達が使う場所の undici fetch インタフェースはDOMのfetchと同等なので、型キャストしても問題ない
-      fetch as unknown as (typeof Window.prototype)['fetch'],
+    return fetch(
       fileURL.toString(),
       {
         headers,

src/normalize.ts

@@ -59,15 +59,6 @@ export interface Config {
   /** 内部キャッシュの最大サイズ。デフォルトでは 1,000 件 */
   cacheSize: number
 
-  /**
-   * バックエンドへのリクエストのタイムアウト。
-   * デフォルト 600ms
-   * タイムアウトした場合、数回リトライを行います。
-   * リトライ回数は {@link backendTries} で設定します。
-   */
-  backendTimeout: number
-  backendTries: number
-
   geoloniaApiKey?: string
 }
 export const config: Config = currentConfig